Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-01-03
Astronomy and Astrophysics
Astrophysics
5 pages, 2 figures. Accepted for publication in MNRAS Letters
Scientific paper
10.1111/j.1745-3933.2008.00441.x
Simple one-zone homogeneous synchrotron self-Compton models have severe difficulties in explaining the TeV emission observed in the radiogalaxy M87. Also the site of the TeV emission region is uncertain: it could be the unresolved jet close to the nucleus, analogously to what proposed for blazars, or an active knot, called HST-1, tens of parsec away. We explore the possibility that the TeV emission of M87 is produced in the misaligned subpc scale jet. We base our modelling on a structured jet, with a fast spine surrounded by a slower layer. In this context the main site responsible for the emission of the TeV radiation is the layer, while the (debeamed) spine accounts for the emission from the radio to the GeV band: therefore we expect a more complex correlation with the TeV component than that expected in one-zone scenarios, in which both components are produced by the same region. Observed from small angles, the spine would dominate the emission, with an overall Spectral Energy Distribution close to those of BL Lac objects with a synchrotron peak located at low energy (LBLs).
Ghisellini Gabriele
Tavecchio Fabrizio
No associations
LandOfFree
Spine-sheath layer radiative interplay in subparsec-scale jets and the TeV emission from M87 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spine-sheath layer radiative interplay in subparsec-scale jets and the TeV emission from M87, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spine-sheath layer radiative interplay in subparsec-scale jets and the TeV emission from M87 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-379134